*'''[http://digicoll.library.wisc.edu/cgi-bin/History/History-idx?type=browse&scope=History.WWIColl Electronic Facsimile Texts of World War One]''' -- books and documents digitized in University of Wisconsin [http://digicoll.library.wisc.edu/History/HistoryHome.html Digital History Collection].

*'''[http://digicoll.library.wisc.edu/cgi-bin/History/History-idx?type=browse&scope=History.WWIColl Electronic Facsimile Texts of World War One]''' -- books and documents digitized in University of Wisconsin [http://digicoll.library.wisc.edu/History/HistoryHome.html Digital History Collection].

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*'''[http://www.spartacus.schoolnet.co.uk/FWW.htm First World War: Index] -- an ambitious school project of relevant, categorized links.

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*'''[http://www.spartacus.schoolnet.co.uk/FWW.htm First World War: Index]''' -- an ambitious school project of relevant, categorized links.

*'''[http://www.cmhg.gc.ca/html/browse/search-en.asp?No=0&N=100221+20001&t=0&Ne=100000 First World War]''' from the [http://www.cmhg.gc.ca/ Canadian Military History Gateway] - literally hundreds of sites.

*'''[http://www.cmhg.gc.ca/html/browse/search-en.asp?No=0&N=100221+20001&t=0&Ne=100000 First World War]''' from the [http://www.cmhg.gc.ca/ Canadian Military History Gateway] - literally hundreds of sites.

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*'''[http://www.bac-lac.gc.ca/eng/discover/military-heritage/first-world-war/Pages/introduction.aspx First World War - Digital Service Files]'''

*'''[http://grandeguerra.bnportugal.pt/ Diário da Grande Guerra]'''. National Library of Portugal website that features timelines with testimonies about the Portuguese presence in WW1 including newspapers, postcards, posters and other materials.

By Country

Australia

The Australian Archives: From this page can be located Australian WWI serving personnel records, along with memorials and other records of Australian participation in the Great War.

The Australian Defence Force Academy: Includes access to the 'First AIF Database Project' which... seeks to record comprehensive information on all 332,000 men and women (i.e. nurses) who served in the the Australian Imperial Force 1914-19.

The Black Watch (RHR) of Canada - the senior Canadian Highland Regiment.

Canada at War - The National SchoolNet collections site, part of Canada's Digital Collections, includes the: CEF Attestation Papers; Books of Remembrance; Aviation Hall of Fame; Canadian Military Medals and Decorations; Canadian Veterans Recollect; Courage Remembered; The Northwest Rebellion of 1885; the Taconis Collection and Canadian Military Uniforms. Major resource, en français et anglais.

Captain Noel Chavasse, Medical Officer of the 10th (Liverpool Scottish) Battalion, the King's (Liverpool) Regiment, England, the only man to win the Victoria Cross twice during the Great War. The primary reference for this life.

The Psywar Society of Great Britain publishes The Falling Leaf, which has published articles dealing with the Great War, including 'The First Leaflet of the First World War', 'Propaganda Behind The Lines', and 'Air Disseminated Postcards of the First World War.

Northern Ireland and the Republic of Ireland

Portugal

Diário da Grande Guerra. National Library of Portugal website that features timelines with testimonies about the Portuguese presence in WW1 including newspapers, postcards, posters and other materials.

World War I History Commission Questionnaires of the State of Virginia, USA. The surveys of World War I veterans in Virginia, a fully-searchable database of over 14,900 records, one for each questionnaire respondent, accessible by name, city/county, and race. Each record is also linked to digitized images of each page of the questionnaires, as well as any accompanying material such as photographs and additional pages submitted by the respondents.